Quick set extension gauge



Jan. 26, 1954 c. B. DELANO QUICK SET EXTENSION GAUGE Filed OOC. 5l, 1951 2 Sheets-Sheet 2 c. B. DELANQ- QUICK SET EXTENSION GAUGE Jan. 26, 1954 Filed 001'.. 3l, 1951 xg d (Zrea ci@ oyaeZ/zo,

Patented Jan. 26, 1295.4'

.Clarence Boyd Delano, Bristow,

.of one-half to 'JohnL Kohler, Bristow,.0kla. ApplicationfOctober 31, 1951,-3Serial No. 254,014

1 Claim.

This invention relates l-to measuring devices particularly used in combinationwith table saws and the like, and in particular an extensible gage having a .block-forming a -base with a head slidably mounted thereon, a graduated tape mounted on a .spool inthe head and extended over one edge of the base, clamping elements securing vthehead riniadiusted positions in relation to the base and also a clamp for providing a stopor .guide to readily determine the width of a piece of .materialrto befcut.

The purpose of this invention is to provide a quick set gage for cutting work on a table saw or the like lwhereby the gage is readily Set'by Athe tape mounted thereon-to -an adjusted position and is-clamped -inthis-position bya thumb screw threaded in the 'base and extended through a slot in an arm extended from the head.

Various vtypes of Ameasuring devices have been used in combination-with table saws and 'the `like and whereas blocks have been clamped to saw tables for providing stops, such devices are not eiiicient as it is -diilicult to hold a measuring rule or scale until the block is accurately clamped in position. With this thought in mind this invention contemplates a combination scale and clamping device whereby with the measuring instrument attached to the mitre gage of a saw table a stop may be accurately set to a desired distance from a saw by a scale on the gage and the gage may be extended to facilitate setting the block or stop an accurate distance from the saw.

The object of this invention is, therefore, to provide means for accurately positioninga stop on a table saw whereby a plurality of parts may be cut to a given dimension without changing stop of the device.

Another object of the invention is to `provide an extensible gage for table saws that may readily be attached to a mitre gage positioned in a groove of the saw table.

A' further object of the invention is to provide an extensible gagefor table saws which is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies an elongated block adapted to be attached to the mitre gage positioned in the slot of a saw table with a head slidably mounted on the block and positioned to extend therefrom, and a exible rule or scale attached to the block and mounted on a spool in the head whereby a stop clamped to the block orhead may readily be accurately positioned in relation to a saw.

iGfther features and advantages of the :invention'will appear :from the vfollowing description taken in. connection .with the drawings, wherein:

Figure 1 .is .a .plan view illustrating the im.- provedquickv set .extensiongage :Figure 2` is `an elevational view :looking-.toward the rear .iside cf .the igauge .showing the head partly extended.

'E-igure 3 is :a -sectional plan taken on line eirof Figure l2 alsoshowing the partsextended.

Figure .4 (sheet if) is a eross .section taken .on line xi-'ii of Figure.,lpshowing fthe gage block attached to a mitre gage and illustrating lthe stopj-indot :and x.dash :lines thereon.

Figure 5 ispa i cross.; section taken .on line. .'5-.5 of .Figure 2.showing a tape spool inthe head @of the gage.

Referring now .to the drawings wherein like reference characters denote corresponding aparts the improved @extension gage of this invention lincludesa block .or hasev it; a ahead. vll, a yeraduated tape l2, a stop I3 and a bar i4 whichiis attached to the head by screws I5 and which is slidably mounted in a slot l in the block I0.

The block It, as illustrated in Figures 2 and 3,

is of an elongated rectangular shape and is substantially rectangular shape in cross section. The grooves or slot l extends longitudinally through one side of the block and the head carrying bar le is slidably mounted in the groove. The bar it is provided with an elongated slot or channel Il through which a thumb screw I8, having a knurled head IS, extends, the screw being threaded into an opening 2li in the block, as shown in Figure 3. The hub 2l of the thumb screw is positioned against the outer surface of the bar ld whereby the bar is clamped to the block to hold the head El in adjusted positions.

The block l-J is also. provided with threaded openings 2! and 22 which receive screws 23 and 2G that secure the block to a mitre gage 25 as shown in Figure 4 wherein the gage is provided -with a thumb screw 26 that holds the gage and block in adjusted angular positions in relation to a saw.

The rear face of the block l0 is provided with a face plate 2iV the plate 2l being secured to the block with screws 28. The hub 2l extends through an opening 29 in the plate 21.

The head il is formed with a cavity 30 in which a spool 3l is journaled on a pin 32 and the graduated tape l2 is positioned around the spool. The spring tension of the tape causes the tape to wind on the pin 32 as the head Il moves toward the block l0. v

The stop I3 is adjusted to the dimension desired on the tape I2 and the stop is secured in position by a thumb screw 33 which is threaded into the extended end of the stop I3 and positioned to bear against the face plate 21 on the surface of the block I0.

With the parts positioned in this manner the Stop I3 has been adjusted on the block I0 to a dimension corresponding with the desired length of a piece of material, however if it is desired to use longer lengths the head II is adjusted outwardly whereby with the block I3 positioned thereon the long leg of the stop which extends downwardly as shown in Figure 4 provides means for engaging the end of a piece of material, such as a board, strip of material or block.

The head II is readily adjusted away from or toward the 'block I0 and the stop I3 may be used thereon as indicated by the dotted lines or the stop may not be used as may be desired.

With the gage attached to the conventional mitre gage of the saw the stop I3 may readily be set to desired distances from the saw to correspond with the length of the cut desired.

The steel or measuring tape I2, which is mounted on the pin 32 in the cavity 30 of the head II extends from the head and the end thereof is positioned in a groove 34 in the upper surface of the block I0. The end of the tape may be secured to the block by suitable means.

The head II Vmay also be provided with a face plate 35 and the plate 35 is secured to the head by screws 36.

With the bar I4 attached to the mitre gage, `as illustrated in Figure 4 a stick 31 of the gage is positioned in a slot in a saw table whereby the parts are readily adjusted in relation to a saw mounted to operate in the table.

It will 'be understood that modifications may be made in the design and arrangement of the parts without departing from the spirit of the invention. Y

What is claimed is:

In a quick set extension gage, a base of rectangular shape, a head spaced from said base and arranged in the same plane therewith, said head being provided with a cavity, a, pin extending through said cavity, a spool journaled on said pin and positioned in said cavity, a spring actuated graduated tape mounted on said spool, there being a pair of spaced parallel slots in a surface of said base, a bar having one end secured to said head and said bar including a pair of spaced parallel legs slidably mounted in said slots, said legs defining a longitudinally extending channel therebetween, a thumb screw arranged in threaded engagement with said base and including a knurled outer head, said screw extending through said channel and including a hub abutting the outer surface of said bar, there being a plurality of threaded openings in said base for receiving securing elements for securing said base to a mitre gage, a face plate secured to the rear face of said base and provided with an opening for receiving the hub of said thumb screw, a

stop member adjustably connected to said base, a face plate secured to said head, there being a groove in the upper surface of said base for receiving said tape.

CLARENCE BOYD DELANO.

References Cited in the le of this patent UNITED STATES PATENTS navvan l 

